Furnace arch



Nov. 6 1923.

C. A. STRACHOTA FURNACE ARCH Filed NOV. 22 1922 Patented Nov. 6, 1923.

CLARENCE A. STRACHOTA, OF MINNEAPOLIS, MINNECOTA, ASSIGNOR 'IO LIPTAK FIRE-BRICK ARCH COMPANY, A CORPORATION OF MINNESOTA.

FURNACE ARCH.

Application filed November 22, 1922. Serial No. 602,599.

To all whom it may concern:

Be it known that I, CLARENCE A. STRA- CHOTA, a citizen of the United States, residing at Minneapolis, in the county of Henriepin and State of Minnesota, have invented certain new and useful Improvements in Furnace Arches; and I do hereby declare the following to be a full, clear, and exact de? scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to fire arches for boilers and provides an extremely simple, highly eflicient and improved block hanger, by the use of which blocks may be hung individually or in groups from supporting beams, and such blocks may be individually or in groups dropped or moved from the arch and replaced.

Generally stated, the invention consists of the novel construction, combinations and arrangement of parts hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a perspective showing one of the beams and several blocks of a furnace arch,

the blocks being supported from the beam by my improved hanger;

Fig. 2 is a perspective showing one of the removed blocks; and

Fig. 3 is a perspective showing one of the removed block hangers.

The numeral 4 indicates one of the supporting beams of the arch, the same having an inverted T-shaped cross-section. The arch-forming blocks 5, as preferably designed, are formed in their tops with rectan gular pockets 6 that are open at top and at one sideor vertical face of the block. The openings in the tops of the pockets 6 are provided with rectangular portions 7 that form undercut shoulders 8. These shoulders 8 extend on the inner sides of the pockets 6 above the bottoms thereof about halfway across the pockets 6 and about halfway from the inner or closed vertical sides thereof toward the open vertical sides of such pockets. These pockets, therefore, form contracted necks 9 and wider clearance passages 10 in the upper portions of the pockets. The block hangers are arranged 1D pairs and, in fact, each complete block hanger comprises two block hanging elements, each of which hanger elements is preferably a short channel iron 11, which may either be cast or formed by cutting a rolled steel channel beam into sections.

When the beam hangers are positioned as shown in Fig. 1, the upper and lower flanges of the hanger elements 11 engage, respectively, over the flange of the beam 4 and under the shoulders-8 of the blocks 5. In the above noted positions of the hanger elements 11, the contracted throats 9 hold the hanger elements interlocked with the beam and blocks by preventing said hanger elements from moving transversely away from each other or away from the beam. There is a tendency for the' han'ger elements 11 to move or slide longitudinally along the beam 4 and, moreover, such movement is prevented by friction.

When, however, it is desired to remove a damaged block, this may be done without disturbing adjacent blocks, simply by sliding the beam hangerelements 11 on the beam until their flanges are aligned with the clearance passages 10 of the pocket 6 and thereupon the block will drop or may be moved downward or by movement perpendicular to the plane of the arch. In thus dropping a block from position, it will be observed that the beam hangers do not move from the one block into the other and, moreover, it is important to note that the said beam hangers, when moved to drop a block, are themselves readily separable from the beam so that they, too, may be replaced if damaged.

In replacing a block, the beam hangers 11 should first be applied on the flanges of the beam 4: and then the block may be inserted to position upward through the arch and the lower portions of the beam hangers will pass through the clearance passages 10 and may then he slid on the beam flange to a position in which their lower flanges will engage under the cooperating lock ledges 8 of the blocks.

These block hangers have the advantage that the blocks may be hung substantially against and with a very small clearance below the under surfaces of the-supporting beams 4. The above noted advantages, to wit: the cheapness of construction, facility to perform the functions stated and efliciency in action, make these beam hangers highly satisfactory for the purposes had in view. They permit very easy replacement of any one or more blocks by movement of the blocks through the plane of the arch and also permit ready replacement of the beam hangers themselves. With these beam hangers, it is not necessary to move any hanger out of the normal block space or into the space occupied by another block in order to replace any one or more blocks. Moreover, the closed sides of the pockets 9 permit the hangers to be moved to the limit against the same and thereby positively determine the proper operative positions of the beam hangers.

The improved so-called block hangers and cooperating hanger-receiving pockets in the blocks have been illustrated as applied to an arch or to a substantially horizontal block structure, but it will be understod that these features might be applied to an upright block structure, such as a wall, and that such arrangement would be within the scope of my invention as herein disclosed and claimed.

What I claim is:

1. The combination with a flanged beam and a block structure in which said blocks are formed With pockets having undercut ledges forming contracted throats, of block hangers arranged in opposing pairs and having outer flanges slidable on the beam flange and having inner flanges slidable under the undercut ledges of the blocks.

2. The combination with a flanged beam and a block structure in which said blocks are formed with pockets having undercut ledges forming contracted throats, of block hangers arranged in opposing pairs and having outer flanges slidable on the beam are formed with pockets having undercut ledges forming contracted throats, of block hangers arranged in opposing pairs and having outer flanges slidable on the beam flange and having inner flanges slid able under the undercut ledges of the blocks, the contracted throats of. said blocks normally holding the hanger elements against displacement by movements transversely thereof, the pockets of said blocks being closed at one side of said ledge and the said ledge terminating short of the other side of said pocket a distance greater than the Width of the beam hangers so that the latter may be passed vertically therethrough.

4.- The structure defined in claim 1 in which said beam hangers are channel-shaped and are set with their flanges projecting toward the transverse center of the beam.

5. The structure defined in claim 3 in which the pocket in a particular block is I open at one face of the block.

6. The structure defined in claim 3 in which said beam hangers are channel-shaped and are set with their flanges projecting toward the transverse center of the beam.

In testimony whereof I afiix my signature.

CLARENCE A. s'rRAcHo'ra. 

